The CBBC fantasy drama Wolfblood returns to TV screens next month for a 13-part second series plus a spin-off programme.

The action show follows the lives of teenagers Maddy, played by Aimee Kelly, and Rhydian, portrayed by Bobby Lockwood, and their secret lives as wolfbloods.

Wolfbloods such as Maddy and Rhydian have razor-sharp senses with an amazing sense of smell and are incredibly fast and super-strong. They also change into wolves every full moon . . .

The intense trials and tribulations of school, friendships, heartbreak, and mystery continue in this second series, as Rhydian unexpectedly returns to Stoneybridge, putting Maddy and her family in danger.

In addition to the new episodes on CBBC, there will also be a "secret" 14th episode that will be shown on the CBBC Red Button and CBBC website, plus a new game that will also be on the CBBC website.

Spencer Campbell, the show's executive producer, said:

We had a great reaction to the first series and are looking forward to introducing some exciting new characters this time round. Series two is packed full of surprises. Maddy and Rhydian are still learning about who they are, whilst trying to avoid discovery, and I think they have grown up a lot. It may be complicated being a teenager, but it's even more difficult when you're a wolfblood teenager!

The 30-minute episodes, which co-star Louisa Connolly-Burnham as Shannon and Kedar Williams-Stirling as Tom, were filmed entirely on location in Northumberland. The show has been produced by Foz Allan, with the visual effects by Munich-based Trixter.

The programme was created by Debbie Moon and is a co-production between CBBC and ZDF/ZDFE.

Spin-off series Wolfblood Uncovered, which has been made by the BBC's Natural History Unit, follows Lockwood as he sets out to find out everything there is to know about wolves and to discover how their capabilities have inspired the wolfbloods of the show. It comprises ten 15-minute episodes.

The first episode of Wolfblood Uncovered, entitled Super Senses, will be shown on Saturday 7th September at 10.30am, with the second episode - Speed And Stamina - being shown the same day at 1.30pm.

Episode one of the new series of Wolfblood will air on Monday 9th September at 5pm, with the second episode being broadcast the next day at the same time. The "secret" episode will be on the CBBC Red Button between 5.35pm and 7.30pm on Monday 9th September, repeated the next day at 5.35pm and on Thursday 12th September at 12pm.

A promotional picture for BBC One's forthcoming new fantasy drama Atlantis has been released.

In the 13-part series, Mark Addy stars as Hercules, with Robert Emms as Pythagoras, Jack Donnelly as Jason, Aiysha Hart as Ariadne, Juliet Stevenson as the Oracle, Sarah Parish as Pasiphaë, and Jemima Rooper as Medusa.

The city of Atlantis is a mysterious, ancient place - a world of bull-leaping, of snake-haired goddesses, and of palaces so vast it was said they were built by giants. It's into this strange, compelling realm that the young Jason arrives and an amazing adventure begins, bringing to life the vast store of Greek myths and legends reimagined in the series.

Shot in Wales and Morocco by Urban Myth Films (originally called Little Monster Films) for BBC Cymru Wales and as a co-production with BBC America, no date has been given yet for when it will start in the UK, although BBC America will be airing it as part of its Supernatural Saturday strand this autumn after its première in the UK, and has given it a start date of Saturday 23rd November.

It is both a privilege and a delight to have the opportunity to take audiences on a journey into the fantastical world of Atlantis. Drawing on the Greek myths for inspiration, we aim to tell classic, action-adventure stories in unexpected and exciting ways – weekly mini-movies that we hope will appeal to young and old alike.

Co-creator and co-executive producer Julian Murphy stated:

This ambitious new series will see us push production values to the limit as we endeavour to bring the epic world of Atlantis to life. By combining state-of-the-art technology with timeless film-making techniques, we want every episode to have the star quality of a Hollywood movie.

When we initially conceived the idea for Atlantis, we knew it would not be possible without the best possible team behind us. From actors to costume, prosthetics to lighting, that team has not disappointed. Indeed, we are lucky to have superb talent on both sides of the camera, who have come together to make Atlantis something truly thrilling.

A huge set was created on the site of an ex-Tesco cold store at the Newhouse Farm Industrial Estate in Chepstow, after it was converted into a television studio for the production.

The teaser trailer for the third series of Sherlock has been released by the BBC following its premiere at the end of last night's repeat of The Reichenbach Fall on BBC One.

In the 26-second clip, brief glimpses are caught of the principal characters but the start date of the new series isn't given, with the clip simply and tantalisingly ending with the words "To be continued . . . "